Bobbin-lock for loom-shuttles



(No Model.) '1

R. P. PEARSON. BOBBIN LOGK FOR 1.00M SHUTTLBS. No. 470,703. PatentedMar. 15, 1892.

INVENTUH [WITNESSES g QW%W/ 7 as, c m/M x UNITED STATES" PATENT OFFICROBERT P. PEAR-SON, OF CAMDEN, NEW JERSEY.

BOBBlN-LOCK FORLOOM-SHUTTLES.

SPECIFICATION forming part of Letters Patent No. 470,703, dated March15, 1892. Application filed .l'anuary 21, 1891. Serial No. 378,565. (Nomodel.)

To all whom it may concern.-

Be it known that I, ROBERT P. PEARSON, a citizen of the United States,residing at Carnden, in the county of Camden and State of New Jersey,have invented new and useful Bobbin-Locks for Loom-Shuttles, of whichthe following is a specification.

My invention consists in an improved lock to be applied to shuttles forregulating the vibration of the spindles and securing the bobbinthereon. A vibrating slotted head, to which the spindle is fixed, and avibrating latch are pivoted at different parts of the lock-frame and inengagement with each other by the latch passing through a slot in thetop of the spindle-head and entering a groove in 'the bobbin-head. Theymove at the same view of the shuttle-body shown in Fig. 1..

Fig. 3 is a longitudinal elevation, side sectioned, showing the spindleelevated and the latch lifted from the groove in the head of the bobbin.Fig. 4 is an enlarged vertical and longitudinal section showing thelatch engaged with the bobbin-head; and Fig. 5 is an enlarged transversesection through the line a b, Fig. 1.

Similar letters refer to similar parts in the several views.

A is a shuttle-body, and B a bobbin-lock fixed within its recess 0 by astub d, extending into the solid end of the shuttle-body. On a pivot eof the lock-jaws f is a vibrating slotted head 0, to which theshuttle-spindle D is fixed. A stop g projects backward from the saidhead for limiting the upward vibration of the spindle by contacting withthe bottom of the lock-frame, which is opened to give it sufficientswing. As shown, Fig. 4, the stop 9 is horizontal and in engagement witha stop on on the stub d when the head is perpendicular and the spindlewithin the shuttle. On a backward vibration of the head for elevatingthe spindle and unlocking the bobbin the stop moves through the openingin the bottom of the lock-frame until it contacts with its front end andarrests the vibration of 5 5 the head.

F is avibrating latch pivoted to the jaws f at h. It is connected withthe spindle-head C by its hook end i passing through the slot j of thesaid head and engaging with a groove Z, formed in the bobbin-head, bywhich the bobbin is secured on the spindle. The spindle-head O and thelatch F are so combined and pivoted to the lock-frame that they movesynchronously, the former serving to actuate 6 5 the latter. A springGis fixed to the back of the lock-frame and then bent and extended alongits bottom until its loose end bears upwardly against the spindle-head Ofor retain ing the spindle in its normal and horizontal position withinthe shuttle-body. It has sufficient force for that purpose withoutpreventin g the raising and retaining of the spindle in an inclinedposition when a bobbin is to be replaced, and is slotted at is toprovide for the 7 5 swing of the spindle-head stop g.

As shown, Figs. 1 and 4, the spindle D is in its horizontal andoperative position within the shuttle-body A. The bobbin E is heldagainst the vibrating head O by the end i of the latch F taking into theannular groove 1, formed in its head. The latch is prevented fromlifting and unlocking by reason of its connection with the slot j in thehead 0, which holds it down. The spring G, fixed to the back and bottomof the frame, keeps the spindle from raising accidentally. For removingthe bobbin E the spindle is raised, the vibration of its head turns andlifts the latch F until its end is released from its contact with theannular groove in the bobbin-head, when the bobbin is free to be removedfrom the spindle.

I claim 1 1. In a bobbin-lock for a loom-shuttle, the combination, withthe lock-frame,of avibrating slotted head having a shuttle-spindleaffixed thereto and a vibrating latch adapted to engage with a groove inthe head of a bobbin, the said slotted head and said latch being pivotedat difierent parts of the lockframe and in engagement with each other bythe latch passing through the slotted head in such manner that thevibration of the spinclle imparts a like vibration to the latch to lockand unlock the bobbin, for the purpose shown and described. 2. In abobbin-lock for a loom-shuttle, the

5 combination,with the lock-frame,of a vibrating slotted head having ashuttle-spindle affixed thereto, a vibrating latch adapted to engagewith a groove in the head'of abobbin, the said slotted head and saidlatch being 10 pivoted at different parts of the lock-frame and inengagement with each other by the latch passing through the slotted headin such manner that the vibration of the spindle imparts a likeVibration to the latch to lock and unlock the bobbin, a stop for theslotted 15 head, and a spring fixed to the lock-frame and bearingagainst the bottom of the slotted head, for the purpose shown anddescribed.

In testimony whereof I affix my signature in presence of two Witnesses.

ROBERT P. PEARSON. Witnesses:

FRANCIS D. PASTORIUS, MARTIN V. BERGEN.

